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The Cidr Report
This is an auto-generated mail on Fri Jul 26 23:00:01 PDT 2002
It is not checked before it leaves my workstation. However, hopefully
you will find this report interesting and will take the time to look
through this to see if you can improve the amount of aggregation you
perform.
Check http://www.employees.org/~tbates/cidr-report.html for a daily
update of this report.
NEW: Check http://www.employees.org/~tbates/cidr-report-region.html for
the regional version of this report.
NEW: Check http://www.employees.org/~tbates/autnums.html for a complete
list of autonomous system number to name mappings as used by the CIDR-Report.
The report is split into sections:
0) General Status
List the route table history for the last week, list any possibly
bogus routes seen and give some status on ASes.
1) Gains by aggregating at the origin AS level
This lists the "Top 30" players who if they decided to aggregate
their announced classful prefixes at the origin AS level could
make a significant difference in the reduction of the current
size of the Internet routing table. This calculation does not
take into account the inclusion of holes when forming an aggregate
so it is possible even larger reduction should be possible.
2) Weekly Delta
A summary of the last weeks changes in terms of withdrawn and
added routes. Please note that this is only a snapshot but does
give some indication of ASes participating in CIDR. Clearly,
it is generally a good thing to see a large amount of withdrawls.
3) Interesting aggregates
Interesting here means not an aggregate made as a set of
classful routes.
Thanks to GX Networks for giving me access to their routing tables once a
day.
Please send any comments about this report directly to CIDR Report <cidr-report at cisco.com>.
------------------------------------------------------------------------------
CIDR REPORT for 26Jul02
0) General Status
Table History
-------------
Date Prefixes
190702 111736
200702 112010
210702 111833
220702 111748
230702 111737
240702 111820
250702 112023
260702 112031
Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.
Possible Bogus Routes
---------------------
AS Summary
----------
Number of ASes in routing system: 13332
Number of ASes announcing only one prefix: 8124 (4581 cidr, 3543 classful)
Largest number of cidr routes: 638 announced by AS3908
Largest number of classful routes: 1206 announced by AS701
1) Gains by aggregating at the origin AS level
--- 26Jul02 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS1221 1088 838 250 23.0% Telstra Pty Ltd
AS701 1206 967 239 19.8% UUNET Technologies, Inc.
AS17557 293 101 192 65.5% Pakistan Telecom
AS6595 230 58 172 74.8% DoD Education Activity Network As
AS852 541 404 137 25.3% Telus Advanced Communications
AS7018 808 681 127 15.7% AT&T
AS16473 195 77 118 60.5% Bell South
AS7303 170 73 97 57.1% Telecom Argentina Stet-France Tel
AS1239 514 417 97 18.9% Sprint
AS4151 237 142 95 40.1% USDA
AS19632 99 5 94 94.9% Metropolis Intercom S.A.
AS12302 118 25 93 78.8% MobiFon S.A.
AS16814 105 20 85 81.0% NSS, S.A.
AS226 171 88 83 48.5% Los Nettos
AS7046 299 222 77 25.8% UUNET Technologies, Inc.
AS4755 208 132 76 36.5% Videsh Sanchar Nigam Ltd. Autonom
AS577 264 191 73 27.7% Bell Advanced Communications Inc.
AS2149 347 274 73 21.0% Performance Systems, Inc.
AS2048 179 107 72 40.2% State of Louisiana
AS724 228 160 68 29.8% DLA Systems Automation Center
AS4323 402 334 68 16.9% Time Warner Communications, Inc.
AS3464 163 103 60 36.8% Alabama SuperComputer Network
AS19834 64 4 60 93.8% NetForce, Inc.
AS10620 85 25 60 70.6% TVCABLE BOGOTA
AS16758 63 6 57 90.5% IKON Office Solutions
AS5515 242 186 56 23.1% Sonera Finland Autonomous System
AS3908 299 243 56 18.7% Supernet, Inc.
AS209 311 255 56 18.0% Qwest
AS9498 83 29 54 65.1% BHARTI BT INTERNET LTD.
AS9051 81 27 54 66.7% INCONET Autonomous System
Total 55129 42479 12650 22.9%
For the rest of the previous weeks gain information please see
http://www.employees.org:80/~tbates/cidr-report.html
2) Weekly Delta
Please see
http://www.employees.org:80/~tbates/cidr-report.html
for this part of the report
3) Interesting aggregates
Please see
http://www.employees.org:80/~tbates/cidr-report.html
for this part of the report
-----
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